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JTS Topology Suite
==================
The JTS Topology Suite is a Java library for creating and manipulating vector geometry. It also provides a comprehensive set of geometry test cases, and the TestBuilder GUI application for working with and visualizing geometry and JTS functions.
[](https://github.com/locationtech/jts/actions)
[](https://gitter.im/locationtech/jts?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
JTS is a project in the [LocationTech](https://www.locationtech.org) working group of the Eclipse Foundation.
## Requirements
Currently JTS targets Java 8 and above.
## Resources
### Code
* [GitHub Repo](https://github.com/locationtech/jts)
* [Maven Central group](https://mvnrepository.com/artifact/org.locationtech.jts)
### Websites
* [LocationTech Home](https://locationtech.org/projects/technology.jts)
* [GitHub web site](https://locationtech.github.io/jts/)
### Communication
* [Mailing List](https://accounts.eclipse.org/mailing-list/jts-dev)
* [Gitter Channel](https://gitter.im/locationtech/jts)
### Forums
* [Stack Overflow](https://stackoverflow.com/questions/tagged/jts)
* [GIS Stack Exchange](https://gis.stackexchange.com/questions/tagged/jts-topology-suite)
## License
JTS is open source software. It is dual-licensed under:
* [Eclipse Public License 2.0](https://www.eclipse.org/legal/epl-v20.html)
* [Eclipse Distribution License 1.0](https://www.eclipse.org/org/documents/edl-v10.php) (a BSD Style License)
See also:
* [License details](LICENSES.md)
* Licensing [FAQ](FAQ-LICENSING.md)
## Documentation
* [**Javadoc**](https://locationtech.github.io/jts/javadoc) for the latest version of JTS
* [**FAQ**](https://locationtech.github.io/jts/jts-faq.html) - Frequently Asked Questions
* [**User Guide**](USING.md) - Installing and using JTS
* [**Tools**](doc/TOOLS.md) - Guide to tools included with JTS
* [**Developing Guide**](DEVELOPING.md) - how to build and develop for JTS
* [**Upgrade Guide**](MIGRATION.md) - How to migrate from previous versions of JTS
## History
* [**Version History**](https://github.com/locationtech/jts/blob/master/doc/JTS_Version_History.md)
* History from the previous JTS SourceForge repo is in the branch [`_old/history`](https://github.com/locationtech/jts/tree/_old/history)
* Older versions of JTS can be found on SourceForge
* There is an archive of distros of older versions [here](https://github.com/dr-jts/jts-versions)
## Contributing
If you are interested in contributing to JTS please read the [**Contributing Guide**](CONTRIBUTING.md).
## Downstream Projects
### Derivatives (ports to other languages)
* [**GEOS**](https://trac.osgeo.org/geos) - C++
* [**NetTopologySuite**](https://github.com/NetTopologySuite/NetTopologySuite) - .NET
* [**JSTS**](https://github.com/bjornharrtell/jsts) - JavaScript
* [**dart_jts**](https://github.com/moovida/dart_jts) - Dart
### Via GEOS
* [**Shapely**](https://github.com/Toblerity/Shapely) - Python wrapper of GEOS
* [**R-GEOS**](https://cran.r-project.org/web/packages/rgeos/index.html) - R wrapper of GEOS
* [**rgeo**](https://github.com/rgeo/rgeo) - Ruby wrapper of GEOS
* [**GEOSwift**](https://github.com/GEOSwift/GEOSwift)- Swift library using GEOS
There are many projects using GEOS - for a list see the [GEOS wiki](https://trac.osgeo.org/geos/wiki/Applications).
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